4. Valves and valve actuation
  5. Rotary valves
  6. Ball valve

Hydril Company LP

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Corporate Assignee

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Composite liner for oilfield tubular goods

Pipe joints or couplings – With casing – lining or protector – Lined
Reexamination Certificate

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Double-stop floating ball valve

Valves and valve actuation – Rotary valves – Ball valve
Reexamination Certificate

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Double-stop floating ball valve

Valves and valve actuation – Rotary valves – Ball valve
Reexamination Certificate

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Electrical contractors embedded in threaded connections

Electrical connectors – Having retainer or passageway for fluent material – Fluent material transmission line
Reexamination Certificate

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Mounts for blowout preventer bonnets

Wells – Processes – Operating valve – closure – or changeable restrictor in a well
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Profile ID: LFUS-PAI-P-2394653

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